Rain Sensor?
Ted
Unlike Ted, I keep mine off, though, unless I need them - I am afraid I'll eventually get scrape marks on my windshield from the occasional single wipe when the glass is dry.
I wish that the wipe frequency map could be modified, maybe as a Star diagnostic. Mine seems to be on the money, but others compalin that it seems too fast / too slow.
There is a sensor on the windshield behind the mirror. The first wiper setting ("intermittent" on lesser cars
) is the one that does the thing.



